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* [PATCH v1] UefiCpuPkg/CpuCacheInfoLib: Correct logical for identifying cache type
@ 2021-08-13  2:29 Jason Lou
  2021-08-13  8:51 ` Ni, Ray
  0 siblings, 1 reply; 3+ messages in thread
From: Jason Lou @ 2021-08-13  2:29 UTC (permalink / raw)
  To: devel; +Cc: Jason, Ray Ni, Eric Dong, Laszlo Ersek, Rahul Kumar

REF: https://bugzilla.tianocore.org/show_bug.cgi?id=3265

Correct the logical for identifying "Direct mapped" cache type.

Signed-off-by: Jason Lou <yun.lou@intel.com>
Cc: Ray Ni <ray.ni@intel.com>
Cc: Eric Dong <eric.dong@intel.com>
Cc: Laszlo Ersek <lersek@redhat.com>
Cc: Rahul Kumar <rahul1.kumar@intel.com>
---
 UefiCpuPkg/Library/CpuCacheInfoLib/CpuCacheInfoLib.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/UefiCpuPkg/Library/CpuCacheInfoLib/CpuCacheInfoLib.c b/UefiCpuPkg/Library/CpuCacheInfoLib/CpuCacheInfoLib.c
index ae81ea9ce2..d66f0300ce 100644
--- a/UefiCpuPkg/Library/CpuCacheInfoLib/CpuCacheInfoLib.c
+++ b/UefiCpuPkg/Library/CpuCacheInfoLib/CpuCacheInfoLib.c
@@ -237,7 +237,7 @@ CpuCacheInfoCollectCoreAndCacheData (
     CacheData[CacheParamLeafIndex].CacheType             = (UINT8)CacheParamEax.Bits.CacheType;
     CacheData[CacheParamLeafIndex].CacheWays             = (UINT16)CacheParamEbx.Bits.Ways;
     CacheData[CacheParamLeafIndex].FullyAssociativeCache = (UINT8)CacheParamEax.Bits.FullyAssociativeCache;
-    CacheData[CacheParamLeafIndex].DirectMappedCache     = (UINT8)CacheParamEdx.Bits.ComplexCacheIndexing;
+    CacheData[CacheParamLeafIndex].DirectMappedCache     = (UINT8)(!CacheParamEdx.Bits.ComplexCacheIndexing);
     CacheData[CacheParamLeafIndex].CacheShareBits        = (UINT16)CacheParamEax.Bits.MaximumAddressableIdsForLogicalProcessors;
     CacheData[CacheParamLeafIndex].CacheSizeinKB         = (CacheParamEbx.Bits.Ways + 1) *
         (CacheParamEbx.Bits.LinePartitions + 1) * (CacheParamEbx.Bits.LineSize + 1) * (CacheParamEcx + 1) / SIZE_1KB;
-- 
2.28.0.windows.1


^ permalink raw reply related	[flat|nested] 3+ messages in thread

* Re: [PATCH v1] UefiCpuPkg/CpuCacheInfoLib: Correct logical for identifying cache type
  2021-08-13  2:29 [PATCH v1] UefiCpuPkg/CpuCacheInfoLib: Correct logical for identifying cache type Jason Lou
@ 2021-08-13  8:51 ` Ni, Ray
  2021-08-13 13:16   ` [edk2-devel] " Jason Lou
  0 siblings, 1 reply; 3+ messages in thread
From: Ni, Ray @ 2021-08-13  8:51 UTC (permalink / raw)
  To: Lou, Yun, devel@edk2.groups.io; +Cc: Dong, Eric, Laszlo Ersek, Kumar, Rahul1

> +    CacheData[CacheParamLeafIndex].DirectMappedCache     = (UINT8)(!CacheParamEdx.Bits.ComplexCacheIndexing);

Instead of using "!", can you please use "CacheParamEdx.Bits.ComplexCacheIndexing == 0"? This is more readable.


^ permalink raw reply	[flat|nested] 3+ messages in thread

* Re: [edk2-devel] [PATCH v1] UefiCpuPkg/CpuCacheInfoLib: Correct logical for identifying cache type
  2021-08-13  8:51 ` Ni, Ray
@ 2021-08-13 13:16   ` Jason Lou
  0 siblings, 0 replies; 3+ messages in thread
From: Jason Lou @ 2021-08-13 13:16 UTC (permalink / raw)
  To: Ni, Ray, devel

[-- Attachment #1: Type: text/plain, Size: 47 bytes --]

Sure, I will change it in next version patch.

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^ permalink raw reply	[flat|nested] 3+ messages in thread

end of thread, other threads:[~2021-08-13 13:16 UTC | newest]

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2021-08-13  2:29 [PATCH v1] UefiCpuPkg/CpuCacheInfoLib: Correct logical for identifying cache type Jason Lou
2021-08-13  8:51 ` Ni, Ray
2021-08-13 13:16   ` [edk2-devel] " Jason Lou

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